I know there have been other references to this issue. But I didn't upgrade from one version of VS to another. I am currently using VS 2013. The project builds fine, and has even deployed successfully in the past. This is a brand new app. So it wasn't something inherited from another project. Where can I start looking? What can I post here that may be helpful for you guys to hopefully help me? It is a web api 2 site. I am using the publish command within VS2013.
问题:
回答1:
Adding the lines below to my .csproj file seems to solve the same error for me:
<PropertyGroup>
<VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
<VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
</PropertyGroup>
As part of trying to resolve the issue, I've also installed the MSBuild.Microsoft.VisualStudio.Web.targets Nuget Package. But I'm still not sure it was necessary in order to resolve the issue.
回答2:
If you get this MSB4057 error from a WebJob project using "Publish as Azure WebJob" using Visual Studio 2013/update 4 - you may need to update the NuGet package Microsoft.Web.WebJobs.Publish
Check MyWebJob\packages.config and if the version is 1.0 you need version 1.02 or higher. From the package manager console run
Install-Package Microsoft.Web.WebJobs.Publish -Version 1.0.2
回答3:
With VS 2013 Update 4. There seems to be issues with the template of a Webjob project so that the reference to webjobs.targets is wrong, even though you've installed the Microsoft.Web.WebJobs.Publish package.
Make sure There Import statement at the bottom of of the project is correct in terms of the path, I tested twice and found it was malformed.
<Import Project="..\..\packages\Microsoft.Web.WebJobs.Publish.1.0.2\tools\webjobs.targets" Condition="Exists('..\..\packages\Microsoft.Web.WebJobs.Publish.1.0.2\tools\webjobs.targets')" />
Also, better avoid using the below, since it binds you to a specific VS version.
<PropertyGroup>
<VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
<VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
</PropertyGroup>
回答4:
Having just re-installed VS 2017 (15.5.6) I ran into this with one of three WCF projects. I picked through the csprojs for all three and could find no difference between them, cutting and pasting the various imports, paths etc from the working ones didn't make any difference.
Adding the nuget package MSBuild.Microsoft.VisualStudio.Web.targets (v14.0.0.3 was the latest, i.e. VS2015) has fixed the problem...for the moment. I can't believe this has gone away for good though.
回答5:
Just bumped into this exact error with VS 2015 Update 3. The latest Microsoft.Web.WebJobs.Publish
was installed, and I tried unstalling and re-installing for good measure. Still didn't work but there was an error on install that I didn't see the first time around:
install.ps1 cannot be loaded because running scripts is disabled on this system.
This is something that most who have ever run a PowerShell script have run into at one time or another and easy to fix (solution is here), but the error message itself is easy to miss.
回答6:
For those who are deploying a WebJob, this error might also be due to a missing webjob-publish-settings.json
file (it should be located in the Properties folder of the WebJob project). Its structure should be e.g:
{
"$schema": "http://schemastore.org/schemas/json/webjob-publish-settings.json",
"webJobName": "MyWebJob",
"startTime": "2017-01-27T03:00:00+00:00",
"endTime": null,
"jobRecurrenceFrequency": "Hour",
"interval": 1,
"runMode": "Scheduled",
"is_singleton": true
}
(this is for an hourly scheduled job).
回答7:
Just run the below on the project you want to publish ( and make sure your VisualStudio is running as "Administrator" )
install-package Microsoft.Web.WebJobs.Publish
回答8:
In order to fix the issue for Visual Studio Enterprise 2015 Update 3, I had to install the following packages and edit the Web job's project file as follows.
STEP 01:Install Packages(Run VS as Administrator for script execution)
1. install-package **MSBuild.Microsoft.VisualStudio.Web.targets**
2. install-package **Microsoft.Web.WebJobs.Publish -Version 1.0.2**
STEP 02: Edit WebJob Project File(Unload the project from VS and Edit/Save .csproj then reload)
<PropertyGroup>
<VisualStudioVersion Condition="'$(VisualStudioVersion)' == ''">10.0</VisualStudioVersion>
<VSToolsPath Condition="'$(VSToolsPath)' == ''">$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)</VSToolsPath>
</PropertyGroup>
回答9:
I got this error in a project with a project.json for the nuget packages.
When I removed the project.json and used the packages.config everything worked fine.
Mind that I did set the ExecutionPolicy for Windows PowerShell before I tried this, (see solution of @Jon Crowell), this might be necesary too.
If anybody finds a way to solve this with a project.json please let me know!
回答10:
I hit this same problem with a project loaded in Visual Studio 2017. It was previously working on a different machine, but not when I migrated to a new one.
After trying all of the suggestions in the answers here (the question is somewhat duplicated several times on StackOverflow), I finally ran across someone elsewhere who mentioned installing the Azure SDK for VS2015.
This isn't supposed to be needed for VS2017, but it solved the problem for me. I'd previously used 2015 on my old machine but had switched to 2017. Apparently, the SDK bits still mattered.
回答11:
To add to the answer by @Uri Golani, a switch to the new PackageReference
way instead of with the traditional nuget that uses the packages
folder, meant it looked like I could delete the packages
folder. Whelp, apparently, those references in the csproj
to the packages
folder (which folder I had deleted) were the problem. I'm not sure how to get the right reference to something else (whatever cache the PackageReference
s refer to), so for now, just re-adding a packages folder, with the Microsoft.Bcl.Build.1.0.21
and the Microsoft.Web.WebJobs.Publish.1.1.0
nuget folders seemed to fix this.